The role of carbon biotemplate density in mechanical properties of biomorphic SiC

被引：31

作者：

Calderon, N. R. ^{[1
,2
]}

Martinez-Escandell, M. ^{[1
,2
]}

Narciso, J. ^{[1
,2
]}

Rodriguez-Reinoso, F. ^{[1
,2
]}

机构：

[1] Univ Alicante, Dept Quim Inorgan, E-03080 Alicante, Spain

[2] IUMA, Alicante 03080, Spain

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2009年 / 29卷 / 03期

关键词：

Microstructure; Mechanical properties; Thermal expansion; SiC; Reactive infiltration; SILICON-CARBIDE CERAMICS; MICROSTRUCTURE; WOOD; BEHAVIOR; INFILTRATION; VAPOR;

D O I：

10.1016/j.jeurceramsoc.2008.05.049

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Biomorphic SiC was prepared from four types of Mediterranean wood as carbon precursor. Carbon biotemplates were obtained by pyrolysis and carbonization up to 1400 degrees C and they were infiltrated with liquid silicon in two different directions. A linear correlation between bending strength and bioSiC density for different types of softwood and hardwood has been found. Mechanical properties were modelled according to the MSA (minimum solid area) approach. Fairly good correlation was found when biomorphic SiC is treated as porous solid. Moreover, the fabrication of bioSiC from carbon biotemplates heat-treated Lip to 2500 degrees C has been additionally studied. An improvement up to 56% in flexural strength has been reached by densification of bioC at such high temperature. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：465 / 472

页数：8

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